SH-H4 Bluetooth 4.0 CC2564

Feature

• Fully qualified Bluetooth 4.0/3.0/2.1/2.0/1.2/1.1
• Postage stamp sized form factor, 13mm x 27mm x 2mm
• Low power
• Class 1.5 support(high output power)
• The default UART Baud rate is 115.2Kbps and can support from 1200bps up to 921Kbps, UART, I2C , PCM data connection interfaces.
• Embedded Bluetooth stack profiles support(requires no host stack): SPP, HFP/HSP, A2DP, AVRCP, MAP, and all BLE protocols.

• VCC:  input power supply 3.3~6V, Prohibit more than 7V
• GND: Ground
• TX:  transport
• RX:  receive  
• State: when bluetooth is connected , output "High level", "no conntected"  output "low level"
• en:when module is connected, give a high level to "EN",the module will disconnected.

AT Command

The way to the AT command mode: supply power to the module, it will enter to the AT mode if it needn’t pair. The interval of command is about 1 second.

Default parameter: Baud rate:9600N81  

Format:
AT+Command[=Parameter]<CR><LF>

Description:
Command always start with AT+ and end with <CR><LF>.
<CR> means "carriage return" and corresponds to the hexadecimal value 0x0D.  <LF> means "line feed" and corresponds to the hexadecimal value 0x0A.
Parameter between [ ] may not exist.
Parameter always start with =if exist.

Example :
AT+BDNAME=? <CR><LF> :Query current device's name.
AT+BDPIN=8888 <CR><LF> :Modify current device's pin code to '8888'.

Command 1 ,

Testing Connection Commands

Command 2 ,

Query/Set —— Bluetooth Name

Example: Send: AT+BDNAME=?
Return: +BDNAME=SH-H4
Send: AT+BDNAME=ABC
Return : +BDNAME=ABC
Command 3,   Query  module  bluetooth  address

Command 4 ,

Query/Set —— Baud Rate

Query device baudrate 
Send:AT+BDBAUD=?
Return:  +BDBAUD=9600
Modify device baudrate 
Send:AT+BDBAUD=115200
Return: +BDBAUD=115200

Command 5 ,

Query/Set ——PIN Code

e.g.
Query Pin Code
Send: AT+BDPIN=?
Return: +BDPIN=0000
Setup Pin Code 1234
Send: AT+BDPIN=1234
Return : +BDPIN=1234